18QHTF21-31.968-PD

Oscillators Overview

The 18QHTF21-31.968-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 31.968 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features a standby mode for power down functionality to reduce energy consumption during idle periods. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm, suitable for space-constrained surface-mount designs.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode capability for power management
• Utilizes quartz-based frequency stability

Oscillators Applications

• General clock signal generation in embedded systems
• Timing reference for digital communication interfaces
• Power-sensitive portable electronic devices

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure that the 1.8V supply voltage aligns with the system's power rail specifications. Confirm that the 4-SMD no-lead package footprint matches the PCB layout constraints. Cross-reference the datasheet for operating temperature ranges to ensure environmental suitability for the intended application environment.

Oscillators Selection Notes

Select this component when a precise 31.968 MHz timing source is required for LVCMOS-compatible circuits. The choice is driven by the need for low-power operation due to the integrated standby feature. Consider the small 2.0x1.6mm form factor if board space is limited. This oscillator is appropriate for applications where stable quartz performance is necessary without the complexity of differential signaling.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies within the same physical footprint. The 'PD' suffix indicates the inclusion of a power-down or standby control function. These components are part of Mercury's broader portfolio of quartz-based frequency control products established since 1973.

Oscillators Replacement Considerations

Direct substitutes must match the 31.968 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent electrical parameters such as phase noise and jitter if critical. Check for compatible pinout configurations to ensure seamless integration without PCB redesign.